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一、使用硬质合金钎头进行鑿岩时,对岩石的作用其作用可分为两部分:一部分是破碎岩石,并使其与岩石整体分离;另一部分是克服岩石的摩擦阻力。钎头破碎岩石能力的大小与作用于岩石的压力及钎头本身的坚固性有关;而纤头的坚固性又受纤双角度、钎双宽度的影响。在相同条件下进行凿岩时,如果钎双宽度趨近于零(即钎双非常锋锐成一直线)时,虽然有较高的穿孔速度和较高的破碎能力,但因钎双强度不够,很快地就被磨损。如果纤双宽度磨钝到一定程度时,虽然其强度增加,但因钎及与岩石的接触面增大,钎双与岩石的摩擦亦随之增大,而破碎岩石的能力则相对地减小,穿孔速度必然跟之降低,同时又增加了合金的消耗。根据矿山的经验,在同种岩石中使
First, the use of carbide drill bit for rock drilling, the role of rock Its role can be divided into two parts: one is broken rock, and make it separate from the rock as a whole; the other part is to overcome the frictional resistance of the rock. The size of shattering rock is related to the pressure acting on the rock and the robustness of the shank itself, while the robustness of the shank is also affected by the double angle of the fiber and the width of the brazing double. When drilling under the same conditions, if the width of the solder rod approaches zero (ie, the solder rod is very sharp and sharp in line), although there is a higher perforation speed and a higher crushing capacity, Was quickly worn. If the fiber double width blunt to a certain extent, although its strength increases, but due to brazing and the rock contact surface increases, the solder double with the rock friction also increases, while the ability to break the rock is relatively reduced , Perforation speed inevitable with the reduction, while increasing the consumption of the alloy. According to the experience of the mine, made in the same kind of rock